diff --git a/.github/workflows/crw.yml b/.github/workflows/crw.yml
index b1eac4f3..9f4e9384 100644
--- a/.github/workflows/crw.yml
+++ b/.github/workflows/crw.yml
@@ -67,7 +67,7 @@ jobs:
         with:
           key: craft-crw-samples
       - name: Cache the CC0 sample files
-        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
+        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: ${{ runner.temp }}/crw-samples
           key: crw-samples-${{ hashFiles('crates/crw/tests/samples.json') }}
diff --git a/.github/workflows/jpeg.yml b/.github/workflows/jpeg.yml
index d10c2598..a778f513 100644
--- a/.github/workflows/jpeg.yml
+++ b/.github/workflows/jpeg.yml
@@ -21,7 +21,7 @@ jobs:
     name: JPEG lint, tests, WASM
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           persist-credentials: false
       - uses: dtolnay/rust-toolchain@b725eda525362e7cf34af9a7243cac1e3f01a7ec # stable
diff --git a/.github/workflows/keymap.yml b/.github/workflows/keymap.yml
index db25d0dd..988ab2dc 100644
--- a/.github/workflows/keymap.yml
+++ b/.github/workflows/keymap.yml
@@ -27,7 +27,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Checkout test fonts
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: storytold/craft-fonts
           ref: b076417b5880bd4154bd22f00695b1d28c6bea83
@@ -65,7 +65,7 @@ jobs:
         with:
           persist-credentials: false
       - name: Checkout test fonts
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           repository: storytold/craft-fonts
           ref: b076417b5880bd4154bd22f00695b1d28c6bea83
diff --git a/.github/workflows/proof.yml b/.github/workflows/proof.yml
index d9bf114c..5082c230 100644
--- a/.github/workflows/proof.yml
+++ b/.github/workflows/proof.yml
@@ -21,13 +21,13 @@ jobs:
     name: Proofing lint, tests with and without Language data, WASM
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           persist-credentials: false
       # The Language data (craft-i18n `language-data/`), embedded by crates/proof/build.rs.
       # Pinned to storytold/craft-i18n#114's head (#109's SCOWL dictionaries + judgment/judgement,
       # CP2.1); TODO(CP2.1): move to #114's merge commit once it merges.
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           repository: storytold/craft-i18n
           ref: c239f934ace90b7939afaceb23b472ceeafd6b8a
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index c8f3a9ca..e0f067ef 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -21,7 +21,7 @@ jobs:
         os: ${{ github.event_name == 'workflow_dispatch' && fromJSON('["ubuntu-latest","windows-latest","macos-latest"]') || fromJSON('["ubuntu-latest","windows-latest"]') }}
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
         with:
           # The token isn't needed after checkout; cargo runs build scripts and proc macros from
           # dependencies, so don't leave it in .git/config for that third-party code to read.